A Foreign Office spokesman said:
Our thoughts are with the victims of these terrible attacks and the people of Spain.
We are currently assisting a small number of British people affected and are working to find out if any more need our help. We have deployed additional staff to Barcelona and have offered support to the Spanish authorities.
The helpline for people calling from Spain is 112 and 012. From abroad it is 0034 93 214 21 24 and 0034 900 400 012.
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